Home / 156,990.90-235,486.35-143,212.80

Finding the Fourth Proportional to 156,990.90, 235,486.35 and 143,212.80

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Solution

The fourth proportional to 156,990.90, 235,486.35 and 143,212.80 is: 214,819.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,990.90 : 235,486.35 = 143,212.80 : x
  2. Step 2: Convert to fraction form
    156,990.90/235,486.35 = 143,212.80/x
  3. Step 3: Cross multiply
    156,990.90x = 235,486.35 × 143,212.80
  4. Step 4: Simplify right side
    156,990.90x = 33,724,659,545.28
  5. Step 5: Solve for x
    x = 33,724,659,545.28/156,990.90
  6. Step 6: Final answer
    x = 214,819.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.